Electric interrupter.



Patgnfed Nov. I8

l L. e. N|LsoN.

ELECTRIC INTERRUPTEH.

(Application filed Muy 14, 1902.)

W/ T/VESSES.'

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UNITED STATES PATENT OFFICE.

LARS G. NILSON, OF NEW YORK, N. Y., ASSIGNOR TO SIEGFRIED M. FISCHER AND HARRY S. FISCHER, OF NEI/V YORK, N. Y., AND HULDAH ANDERSON, OF DES MOINES, IOWA.

ELECTRIC INTERRUPTER.

SPEUIFICATIQN forming part of Letters Patent No. 714,020, dated November` 18, 1902.

Application iiletl May 14, 1902. Serial No. 107,243. (No model.)

To @ZZ whom [i may concern: two-pole electromagnet connected at one end Be it known that I, LABS G. NILSON, a citithrough a wire 2 with a battery 3, the other zen of the United States, and aresidentof the end of the electromagnet being connected city of New York, borough of Manhattan, in through a wire 4 with a vibratory strip 5, of

5 the county and State of New York, have innon-magnetic metal. This strip 5 is sup- 55 vented a new and Improved Electric Interported across the poles of the electromagnet, rupter, of which the following is a full, clear, and arranged on the upper side of the strip and exact description. are the double armatures 6 7. Secured to This invention relates particularly to inthe strip 5 between the inner ends of the 1o terrupters for sparking induction-coils. In armatures is a platinum contact-point S, de- 6o inductioncoils operated by pulsatory electric signed to be engaged by a platinum point 9 current through the primary circuit the inon an adjusting-screw 10. It will be noted ductive effects in the secondary circuit are that the inner ends of the armatures are proportional to the rapidity of the changes in curved upward and that both contact-points 1'5 the primary circuit. The highest tension or 8 and 9 are wholly embraced in the enlarged 65 the brightest spark in the secondaryis shown field provided by so upwardly curving the not at the closing, but at the opening or ends. The point 9 through the screw l0 and breaking of the primary circuit, the cleaner its support is connected by a wire ll with the or quicker the break the better the results. primary 12 of. the induction-coil, the said zo It is well known that in ordinaryinductionprimary being also connected, by means of a 7o coils using platinum-tipped contacts in the wire 13, with the battery 3. vibrator even with proper condensers the The secondary 14E of the induction-coil is contact-points will burn or corrode more or connected in the usual manner with the less. This burning or arcing not only desparking points.

z5 stroys the points rapidly, but gives poor re- A condenser 15 is in connection with the 75 sults in the secondary of the coil. It is also wire 1l and with one end ofthe strip 5. well known that if an electric connection is The circuit may be traced from the battery broken, producing a spark or an arc in the through the wire 2, the electromagnet, the magnetic field, the magnetism will have a wire 4, the vibratory strip 5, the contacts 8 3o tendency to diminish or blow out the spark. and i), the screw lO, the wire ll, the primary 8o In order to produce the best results in inducof the induction-coil, and back to the battery. tion-coils and at the same time improve the In my device the general action is of course action and prolong the life of the moving substantially the same as that in any other parts, I have provided an inferrupter in similar system of induction-coil; but my im- 35 which the magnetism of theinterrupteritselt' plovement consists, essentially, in placing 85 is utilized for blowing out the destructive the contacts of the interrupter in a powerful spark at the primary contact-points. magnetic field, the magnetic action of which I will describe an electric interrupter enlis shown in dotted lines in Fig. 2. bodying my invention and then point out Having thus described my invention, I

4o the novel features in the appended claims. claim as new and desire t0 secure by Letters 9o Reference is to be had to the accompanying Patentdrawings, forming apart of this specication, l. An interrupter comprising an electroin which similar characters of reference indimagnet arranged in an electric circuit, a vicate corresponding parts in both the figures. bratory strip extended across the poles of the 45 Figure lis an elevation of an interrupter electromagnet, and a divided or double ar 95 embodying my invention, showing the same mature arranged on the strip, substantially in circuit with an induction-coil or sparking as specified. coil; and Fig. 2 is an elevation showing the 2. An interrupter comprising an electroaction in the magnetic field. magnet arranged in an electric circuit, com- 5o Referring to the drawings, l designates a prising an induction-coil, the vibratory strip loo extended across the poles of the'magnet, the twopart armature arranged on said strip, the contact-point attached tothe strip between the inner ends of the two parts of the armature, and a confact-point having connection with the induction-coii and coacting with the first-named c0ntact-point, substantially as specified.

3. In an interrupter, an electromagnet arranged in an electric circuit comprising an induction-coil, a vibratory strip of non-magnetic material extended over the poles of the e1ectrornagnet,an armature consisting of two separated parts, the inner ends of said parts being curved upward, a contactpoint attached to the strip between the inner ends of the armature, and another contact-point in connection with the induction-coil and co- 

